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Finding the Fourth Proportional to 61,940.69, 85,478.14 and 33,646.36

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Solution

The fourth proportional to 61,940.69, 85,478.14 and 33,646.36 is: 46,431.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,940.69 : 85,478.14 = 33,646.36 : x
  2. Step 2: Convert to fraction form
    61,940.69/85,478.14 = 33,646.36/x
  3. Step 3: Cross multiply
    61,940.69x = 85,478.14 × 33,646.36
  4. Step 4: Simplify right side
    61,940.69x = 2,876,028,270.57
  5. Step 5: Solve for x
    x = 2,876,028,270.57/61,940.69
  6. Step 6: Final answer
    x = 46,431.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.